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Solar Energy & Solar Power Resources

Solar Energy in Promise City, IA

Solar Energy in Promise City

Sorry, historical solar radition values for Promise City are currently unavailable, please check back later.

Solar Panels in Promise City

Solar panels in Promise City that will produce the maximum solar energy output. [More]

Sunrise & Sunset in Promise City

The total length of the day in Promise City, IA today (May 21, 2026) will be 14 hours and 42 minutes. [More]

Solar Power in Promise City, IA

Solar Energy Data in Promise City, IA

See the chart below to see how different types of solar panel installations compare in Promise City.

Historical solar power output data for Promise City is not currently available.

Solar Energy Analysis for Promise City, IA

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Solar Energy Glossary

Global Horizontal Irradiance (GHI)

Global Horizontal Irradiance: The total amount of solar radiation that is received per unit area by a surface that is always positioned in a horizontal manner.

Direct Normal Irradiance (DNI)

Direct Normal Irradiance: The total amount of solar radiation received per unit area by a surface that is always perpendicular to the sun rays that come in a straight line from the direction of the sun at its current position in the sky.

Average Tilt at Latitude (ATaL)

Average Tilt at Latitude: The total amount of solar radiation received per unit area by a surface that is tilted toward the equator at an angle equal to the current latitude. ATaL will often produce the optimum energy output.

Solar Radiation Levels in Promise City

Solar Radiation Data in Promise City, IA

See the chart below for monthly solar radiation levels in Promise City.

Sorry, data is not currently available.

Solar Radiation Analysis for Promise City, IA

Sorry, it is not possible to complete our solar radiation analysis for Promise City at this time.

Historical solar radiation data for Promise City is not currently available.

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Solar Power Comparison: Promise City vs. the U.S.

Solar Power Levels in Promise City

Sorry, solar radiation data for Iowa is not currently available.

Solar Power: Promise City vs. the U.S.

Below is a month-by-month comparison of how average Promise City solar radiation levels compare to average levels in a city with historcially high levels (NV) and a city with historically low levels (WA). ^[1]

Sorry, solar radiation data for Iowa is not currently available.

Solar Data & Statistics for Promise City

Sunrise / Sunset in Promise City

Sunrise/Sunset for May 21, 2026 ^[2]
- Sunrise: 5:48 am
- Sunset: 8:30 pm
- Length of Day: 14:42

Solar Energy Statistics for Promise City

Best Months for Solar in Promise City

Monthly data not currently available.

Solar Panel Installs in Promise City

We do not currently have data on solar panel installations in the city of Promise City, IA at this current time.

Solar Power Output in Promise City

The Power of Solar in Promise City, IA

Monthly AC solar system output averages for Promise City (ia). Month-by-month solar power, as ranked by AC output, in Promise City. ^[2]

AC output data is not currently available.

Solar Output Analysis for Promise City, IA

Sorry, it is not possible to complete our solar radiation analysis for Promise City at this time.

Historical solar radiation data for Promise City is not currently available.

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Cost of Utilities in Promise City

Promise City Electricity Costs

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Solar Power Poll: Promise City

Vote now: Given all of the data and analysis provided for Promise City, is solar power a good choice for residents of this city?

Promise City Natural Gas Costs

Sorry, Iowa residential natural gas prices are currently unavailable.

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Weather Forecast for Promise City, IA ^[5]

Thu May 21

62°F

Light Rain
Min: 52°F
Max: 66°F

Moderate breeze: 12 mps E
Precip.: Chance of Rain
Humidity: 60%
Cloud cover: 100%

Fri May 22

65°F

Light Rain
Min: 52°F
Max: 66°F

Gentle Breeze: 12 mps ESE
Precip.: Chance of Rain
Humidity: 77%
Cloud cover: 100%

Sat May 23

69°F

Moderate Rain
Min: 55°F
Max: 70°F

Light breeze: 5 mps SE
Precip.: Chance of Rain
Humidity: 76%
Cloud cover: 97%

Sun May 24

75°F

Light Rain
Min: 59°F
Max: 77°F

Light breeze: 6 mps SE
Precip.: Chance of Rain
Humidity: 70%
Cloud cover: 17%

Mon May 25

79°F

Broken Clouds
Min: 63°F
Max: 81°F

Gentle Breeze: 9 mps SE
Precip.: n/a
Humidity: 67%
Cloud cover: 51%

Tue May 26

76°F

Light Rain
Min: 63°F
Max: 76°F

Gentle Breeze: 12 mps ESE
Precip.: Chance of Rain
Humidity: 75%
Cloud cover: 70%

More about Promise City

About Promise City

The city of Promise City, IA in Wayne County has an approximate population of 111. ^[6]

Promise City, IA Solar Energy

To learn more about solar energy and solar power Promise City, IA, or for more solar-related resources for Promise City, visit the U.S. Energy Information Administration.